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C101B OTA LowPass Filter

€210.00 Ex VAT€254.10 Inc VAT

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The C101B OTA Lowpass Filter is a low pass filter based
on cascade OTA-stages with 24dB/octave and 6dB/octave
outputs. This kind of filter can be one found in classic
synthesizers like Roland Jupiter 8 , Roland System 100m,
Roland SH-1, SH-7, SH-101, Roland System 700 , Jen SX1000
and many more. The C101B is the single width version of our
C101 MKII filter.
The filter resonance be voltage controlled and when the
resonance is set at a high value the filter will start to oscillate.
The C101B can be used as a sine wave VCO and it will track
perfectly over 4 octaves and it is also temperature
compensated.
As many 4-pole low pass filters the output volume
drastically drops when the resonance is increased. The C101B
includes an especially designed circuit to maintain a constant
output level at any resonance value. This circuit can be
activated or deactivated on the front panel allowing the user to
select between the traditional response and the gain
compensated response. The gain compensation is not
implemented in the 6dB response this way this output at high
resonance levels will sound almost like a bandpass filter.
The FM1 input has a 0,66 V/Octave response expanding
the modulation range to 7,5 octaves using the typical 5V
envelope.
C101B main characteristics
- Two filter outputs with 6dB and 24dB response
- Voltage controlled resonance
- Three frequency modulation inputs one of them with an
attenuverter
- Filter self oscillate and it can be used as VCO ( 1V/Octave )
- Gain compensation circuit for the 24dB output
- Temperature compensated
- One audio input